./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:56:08,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:56:08,591 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 02:56:08,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:56:08,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:56:08,617 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:56:08,618 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:56:08,618 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:56:08,619 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:56:08,620 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:56:08,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:56:08,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:56:08,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:56:08,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:56:08,622 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:56:08,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:56:08,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:56:08,624 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:56:08,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:56:08,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:56:08,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:56:08,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:56:08,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:56:08,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:56:08,627 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 02:56:08,627 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:56:08,628 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:56:08,628 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:56:08,628 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:56:08,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:56:08,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:56:08,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:56:08,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:56:08,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:56:08,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:56:08,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:56:08,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:56:08,632 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:56:08,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:56:08,633 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:56:08,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:56:08,633 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:56:08,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:56:08,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:56:08,634 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 [2023-11-29 02:56:08,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:56:08,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:56:08,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:56:08,899 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:56:08,899 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:56:08,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2023-11-29 02:56:11,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:56:11,782 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:56:11,783 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2023-11-29 02:56:11,790 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/data/4573ea524/c4ab6e602df5491cb40f3bdcd09d1359/FLAG15a294a0a [2023-11-29 02:56:11,802 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/data/4573ea524/c4ab6e602df5491cb40f3bdcd09d1359 [2023-11-29 02:56:11,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:56:11,805 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:56:11,807 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:56:11,807 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:56:11,811 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:56:11,811 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:56:11" (1/1) ... [2023-11-29 02:56:11,812 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738b50ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:11, skipping insertion in model container [2023-11-29 02:56:11,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:56:11" (1/1) ... [2023-11-29 02:56:11,851 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:56:12,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:56:12,028 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:56:12,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:56:12,071 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:56:12,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:12 WrapperNode [2023-11-29 02:56:12,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:56:12,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:56:12,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:56:12,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:56:12,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:12" (1/1) ... [2023-11-29 02:56:12,089 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:12" (1/1) ... [2023-11-29 02:56:12,123 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 18, calls inlined = 32, statements flattened = 409 [2023-11-29 02:56:12,123 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:56:12,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:56:12,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:56:12,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:56:12,136 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:12" (1/1) ... [2023-11-29 02:56:12,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:12" (1/1) ... [2023-11-29 02:56:12,141 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:12" (1/1) ... [2023-11-29 02:56:12,160 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 7, 2, 2]. 54 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-29 02:56:12,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:12" (1/1) ... [2023-11-29 02:56:12,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:12" (1/1) ... [2023-11-29 02:56:12,173 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:12" (1/1) ... [2023-11-29 02:56:12,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:12" (1/1) ... [2023-11-29 02:56:12,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:12" (1/1) ... [2023-11-29 02:56:12,182 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:12" (1/1) ... [2023-11-29 02:56:12,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:56:12,186 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:56:12,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:56:12,186 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:56:12,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:12" (1/1) ... [2023-11-29 02:56:12,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:56:12,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:56:12,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:56:12,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:56:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:56:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 02:56:12,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 02:56:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 02:56:12,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 02:56:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:56:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:56:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:56:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:56:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:56:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 02:56:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 02:56:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 02:56:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 02:56:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 02:56:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:56:12,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:56:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 02:56:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 02:56:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 02:56:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 02:56:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:56:12,254 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 02:56:12,372 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:56:12,374 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:56:12,953 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:56:13,290 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:56:13,290 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 02:56:13,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:56:13 BoogieIcfgContainer [2023-11-29 02:56:13,291 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:56:13,293 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:56:13,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:56:13,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:56:13,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:56:11" (1/3) ... [2023-11-29 02:56:13,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db6e77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:56:13, skipping insertion in model container [2023-11-29 02:56:13,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:12" (2/3) ... [2023-11-29 02:56:13,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db6e77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:56:13, skipping insertion in model container [2023-11-29 02:56:13,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:56:13" (3/3) ... [2023-11-29 02:56:13,299 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2023-11-29 02:56:13,306 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 02:56:13,314 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:56:13,314 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2023-11-29 02:56:13,314 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 02:56:13,410 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 02:56:13,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 181 transitions, 376 flow [2023-11-29 02:56:13,503 INFO L124 PetriNetUnfolderBase]: 21/179 cut-off events. [2023-11-29 02:56:13,503 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 02:56:13,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 179 events. 21/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 844 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2023-11-29 02:56:13,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 181 transitions, 376 flow [2023-11-29 02:56:13,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 177 transitions, 363 flow [2023-11-29 02:56:13,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:56:13,533 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@104bbe23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:56:13,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2023-11-29 02:56:13,537 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:56:13,537 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 02:56:13,538 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:56:13,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:13,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 02:56:13,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:56:13,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:13,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1260677, now seen corresponding path program 1 times [2023-11-29 02:56:13,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:13,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568837165] [2023-11-29 02:56:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:13,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:13,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:13,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568837165] [2023-11-29 02:56:13,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568837165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:13,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:56:13,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:56:13,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982992564] [2023-11-29 02:56:13,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:13,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:56:13,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:13,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:56:13,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:56:13,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 181 [2023-11-29 02:56:13,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 177 transitions, 363 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:13,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:13,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 181 [2023-11-29 02:56:13,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:56:14,722 INFO L124 PetriNetUnfolderBase]: 2308/5835 cut-off events. [2023-11-29 02:56:14,723 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-29 02:56:14,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9219 conditions, 5835 events. 2308/5835 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 54214 event pairs, 1276 based on Foata normal form. 1/4446 useless extension candidates. Maximal degree in co-relation 8938. Up to 3314 conditions per place. [2023-11-29 02:56:14,774 INFO L140 encePairwiseOnDemand]: 175/181 looper letters, 61 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2023-11-29 02:56:14,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 180 transitions, 499 flow [2023-11-29 02:56:14,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:56:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:56:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 535 transitions. [2023-11-29 02:56:14,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.738950276243094 [2023-11-29 02:56:14,791 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 535 transitions. [2023-11-29 02:56:14,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 535 transitions. [2023-11-29 02:56:14,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:56:14,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 535 transitions. [2023-11-29 02:56:14,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:14,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:14,809 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:14,811 INFO L175 Difference]: Start difference. First operand has 163 places, 177 transitions, 363 flow. Second operand 4 states and 535 transitions. [2023-11-29 02:56:14,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 180 transitions, 499 flow [2023-11-29 02:56:14,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 180 transitions, 494 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 02:56:14,825 INFO L231 Difference]: Finished difference. Result has 165 places, 180 transitions, 387 flow [2023-11-29 02:56:14,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=387, PETRI_PLACES=165, PETRI_TRANSITIONS=180} [2023-11-29 02:56:14,831 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 2 predicate places. [2023-11-29 02:56:14,831 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 180 transitions, 387 flow [2023-11-29 02:56:14,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:14,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:14,832 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 02:56:14,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:56:14,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:56:14,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:14,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1096609753, now seen corresponding path program 1 times [2023-11-29 02:56:14,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:14,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879187188] [2023-11-29 02:56:14,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:14,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:14,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:14,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879187188] [2023-11-29 02:56:14,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879187188] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:56:14,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863891006] [2023-11-29 02:56:14,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:14,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:56:14,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:56:14,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:56:14,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:56:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:15,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:56:15,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:56:15,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:15,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:56:15,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863891006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:15,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:56:15,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 02:56:15,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868457826] [2023-11-29 02:56:15,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:15,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:56:15,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:15,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:56:15,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:56:15,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 181 [2023-11-29 02:56:15,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 180 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:15,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:15,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 181 [2023-11-29 02:56:15,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:56:15,926 INFO L124 PetriNetUnfolderBase]: 2308/5834 cut-off events. [2023-11-29 02:56:15,926 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-29 02:56:15,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9207 conditions, 5834 events. 2308/5834 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 54161 event pairs, 1276 based on Foata normal form. 1/4446 useless extension candidates. Maximal degree in co-relation 9180. Up to 3309 conditions per place. [2023-11-29 02:56:15,979 INFO L140 encePairwiseOnDemand]: 176/181 looper letters, 57 selfloop transitions, 7 changer transitions 0/179 dead transitions. [2023-11-29 02:56:15,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 179 transitions, 511 flow [2023-11-29 02:56:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:56:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:56:15,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 767 transitions. [2023-11-29 02:56:15,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7062615101289135 [2023-11-29 02:56:15,983 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 767 transitions. [2023-11-29 02:56:15,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 767 transitions. [2023-11-29 02:56:15,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:56:15,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 767 transitions. [2023-11-29 02:56:15,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:15,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:15,991 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:15,991 INFO L175 Difference]: Start difference. First operand has 165 places, 180 transitions, 387 flow. Second operand 6 states and 767 transitions. [2023-11-29 02:56:15,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 179 transitions, 511 flow [2023-11-29 02:56:15,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 179 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:56:15,996 INFO L231 Difference]: Finished difference. Result has 168 places, 179 transitions, 394 flow [2023-11-29 02:56:15,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=168, PETRI_TRANSITIONS=179} [2023-11-29 02:56:15,998 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 5 predicate places. [2023-11-29 02:56:15,998 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 179 transitions, 394 flow [2023-11-29 02:56:15,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:15,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:15,999 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 02:56:16,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:56:16,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:56:16,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:56:16,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:16,201 INFO L85 PathProgramCache]: Analyzing trace with hash 364837299, now seen corresponding path program 1 times [2023-11-29 02:56:16,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:16,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208513729] [2023-11-29 02:56:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:16,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:16,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:16,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208513729] [2023-11-29 02:56:16,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208513729] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:56:16,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139398613] [2023-11-29 02:56:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:16,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:56:16,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:56:16,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:56:16,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:56:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:16,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:56:16,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:56:16,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:16,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:56:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:16,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139398613] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:56:16,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:56:16,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 02:56:16,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121915895] [2023-11-29 02:56:16,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:56:16,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:56:16,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:16,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:56:16,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:56:16,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 181 [2023-11-29 02:56:16,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 179 transitions, 394 flow. Second operand has 12 states, 12 states have (on average 118.08333333333333) internal successors, (1417), 12 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:16,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:16,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 181 [2023-11-29 02:56:16,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:56:17,262 INFO L124 PetriNetUnfolderBase]: 2311/5846 cut-off events. [2023-11-29 02:56:17,263 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-29 02:56:17,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9251 conditions, 5846 events. 2311/5846 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 54302 event pairs, 1276 based on Foata normal form. 3/4458 useless extension candidates. Maximal degree in co-relation 9181. Up to 3316 conditions per place. [2023-11-29 02:56:17,309 INFO L140 encePairwiseOnDemand]: 176/181 looper letters, 60 selfloop transitions, 13 changer transitions 0/188 dead transitions. [2023-11-29 02:56:17,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 188 transitions, 594 flow [2023-11-29 02:56:17,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:56:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:56:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1246 transitions. [2023-11-29 02:56:17,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6883977900552486 [2023-11-29 02:56:17,315 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1246 transitions. [2023-11-29 02:56:17,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1246 transitions. [2023-11-29 02:56:17,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:56:17,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1246 transitions. [2023-11-29 02:56:17,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.6) internal successors, (1246), 10 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:17,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:17,328 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:17,328 INFO L175 Difference]: Start difference. First operand has 168 places, 179 transitions, 394 flow. Second operand 10 states and 1246 transitions. [2023-11-29 02:56:17,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 188 transitions, 594 flow [2023-11-29 02:56:17,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 188 transitions, 548 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-29 02:56:17,335 INFO L231 Difference]: Finished difference. Result has 175 places, 188 transitions, 446 flow [2023-11-29 02:56:17,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=446, PETRI_PLACES=175, PETRI_TRANSITIONS=188} [2023-11-29 02:56:17,336 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 12 predicate places. [2023-11-29 02:56:17,336 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 188 transitions, 446 flow [2023-11-29 02:56:17,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 118.08333333333333) internal successors, (1417), 12 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:17,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:17,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:56:17,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:56:17,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:56:17,539 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:56:17,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:17,539 INFO L85 PathProgramCache]: Analyzing trace with hash 704098806, now seen corresponding path program 1 times [2023-11-29 02:56:17,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:17,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731116067] [2023-11-29 02:56:17,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:17,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:17,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:17,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731116067] [2023-11-29 02:56:17,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731116067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:17,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:56:17,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:56:17,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163849654] [2023-11-29 02:56:17,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:17,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:56:17,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:17,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:56:17,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:56:17,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 181 [2023-11-29 02:56:17,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 188 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:17,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:17,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 181 [2023-11-29 02:56:17,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:56:18,960 INFO L124 PetriNetUnfolderBase]: 5359/11348 cut-off events. [2023-11-29 02:56:18,961 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-29 02:56:18,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19387 conditions, 11348 events. 5359/11348 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 105445 event pairs, 1074 based on Foata normal form. 416/9388 useless extension candidates. Maximal degree in co-relation 19353. Up to 3742 conditions per place. [2023-11-29 02:56:19,047 INFO L140 encePairwiseOnDemand]: 149/181 looper letters, 144 selfloop transitions, 20 changer transitions 0/256 dead transitions. [2023-11-29 02:56:19,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 256 transitions, 914 flow [2023-11-29 02:56:19,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:56:19,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:56:19,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 544 transitions. [2023-11-29 02:56:19,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7513812154696132 [2023-11-29 02:56:19,051 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 544 transitions. [2023-11-29 02:56:19,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 544 transitions. [2023-11-29 02:56:19,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:56:19,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 544 transitions. [2023-11-29 02:56:19,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:19,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:19,058 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:19,058 INFO L175 Difference]: Start difference. First operand has 175 places, 188 transitions, 446 flow. Second operand 4 states and 544 transitions. [2023-11-29 02:56:19,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 256 transitions, 914 flow [2023-11-29 02:56:19,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 256 transitions, 903 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 02:56:19,066 INFO L231 Difference]: Finished difference. Result has 175 places, 196 transitions, 571 flow [2023-11-29 02:56:19,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=571, PETRI_PLACES=175, PETRI_TRANSITIONS=196} [2023-11-29 02:56:19,068 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 12 predicate places. [2023-11-29 02:56:19,068 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 196 transitions, 571 flow [2023-11-29 02:56:19,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:19,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:19,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:56:19,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:56:19,069 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:56:19,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:19,069 INFO L85 PathProgramCache]: Analyzing trace with hash 352227929, now seen corresponding path program 1 times [2023-11-29 02:56:19,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:19,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765048759] [2023-11-29 02:56:19,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:19,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:19,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:19,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765048759] [2023-11-29 02:56:19,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765048759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:19,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:56:19,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:56:19,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520368926] [2023-11-29 02:56:19,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:19,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:56:19,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:19,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:56:19,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:56:19,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 181 [2023-11-29 02:56:19,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 196 transitions, 571 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:19,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:19,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 181 [2023-11-29 02:56:19,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:56:20,088 INFO L124 PetriNetUnfolderBase]: 3247/8460 cut-off events. [2023-11-29 02:56:20,088 INFO L125 PetriNetUnfolderBase]: For 2038/2248 co-relation queries the response was YES. [2023-11-29 02:56:20,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15416 conditions, 8460 events. 3247/8460 cut-off events. For 2038/2248 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 84140 event pairs, 1901 based on Foata normal form. 114/6835 useless extension candidates. Maximal degree in co-relation 15380. Up to 3379 conditions per place. [2023-11-29 02:56:20,127 INFO L140 encePairwiseOnDemand]: 176/181 looper letters, 106 selfloop transitions, 4 changer transitions 0/226 dead transitions. [2023-11-29 02:56:20,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 226 transitions, 858 flow [2023-11-29 02:56:20,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:56:20,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:56:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2023-11-29 02:56:20,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.787292817679558 [2023-11-29 02:56:20,130 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 570 transitions. [2023-11-29 02:56:20,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 570 transitions. [2023-11-29 02:56:20,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:56:20,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 570 transitions. [2023-11-29 02:56:20,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:20,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:20,134 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:20,134 INFO L175 Difference]: Start difference. First operand has 175 places, 196 transitions, 571 flow. Second operand 4 states and 570 transitions. [2023-11-29 02:56:20,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 226 transitions, 858 flow [2023-11-29 02:56:20,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 226 transitions, 858 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 02:56:20,153 INFO L231 Difference]: Finished difference. Result has 180 places, 197 transitions, 594 flow [2023-11-29 02:56:20,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=594, PETRI_PLACES=180, PETRI_TRANSITIONS=197} [2023-11-29 02:56:20,154 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 17 predicate places. [2023-11-29 02:56:20,154 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 197 transitions, 594 flow [2023-11-29 02:56:20,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:20,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:20,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:56:20,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:56:20,155 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:56:20,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:20,156 INFO L85 PathProgramCache]: Analyzing trace with hash 352259739, now seen corresponding path program 1 times [2023-11-29 02:56:20,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:20,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035653870] [2023-11-29 02:56:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:20,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:20,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:20,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035653870] [2023-11-29 02:56:20,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035653870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:20,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:56:20,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:56:20,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974639999] [2023-11-29 02:56:20,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:20,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:56:20,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:20,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:56:20,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:56:20,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 181 [2023-11-29 02:56:20,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 197 transitions, 594 flow. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:20,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:20,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 181 [2023-11-29 02:56:20,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:56:22,341 INFO L124 PetriNetUnfolderBase]: 9650/21534 cut-off events. [2023-11-29 02:56:22,341 INFO L125 PetriNetUnfolderBase]: For 7180/7256 co-relation queries the response was YES. [2023-11-29 02:56:22,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42188 conditions, 21534 events. 9650/21534 cut-off events. For 7180/7256 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 211929 event pairs, 1375 based on Foata normal form. 284/18586 useless extension candidates. Maximal degree in co-relation 42150. Up to 6432 conditions per place. [2023-11-29 02:56:22,534 INFO L140 encePairwiseOnDemand]: 162/181 looper letters, 205 selfloop transitions, 32 changer transitions 0/337 dead transitions. [2023-11-29 02:56:22,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 337 transitions, 1465 flow [2023-11-29 02:56:22,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:56:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:56:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 721 transitions. [2023-11-29 02:56:22,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7966850828729282 [2023-11-29 02:56:22,537 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 721 transitions. [2023-11-29 02:56:22,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 721 transitions. [2023-11-29 02:56:22,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:56:22,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 721 transitions. [2023-11-29 02:56:22,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:22,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:22,541 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:22,541 INFO L175 Difference]: Start difference. First operand has 180 places, 197 transitions, 594 flow. Second operand 5 states and 721 transitions. [2023-11-29 02:56:22,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 337 transitions, 1465 flow [2023-11-29 02:56:22,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 337 transitions, 1462 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:56:22,609 INFO L231 Difference]: Finished difference. Result has 187 places, 219 transitions, 861 flow [2023-11-29 02:56:22,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=861, PETRI_PLACES=187, PETRI_TRANSITIONS=219} [2023-11-29 02:56:22,610 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 24 predicate places. [2023-11-29 02:56:22,610 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 219 transitions, 861 flow [2023-11-29 02:56:22,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:22,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:22,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:56:22,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:56:22,611 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:56:22,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:22,611 INFO L85 PathProgramCache]: Analyzing trace with hash -149047719, now seen corresponding path program 1 times [2023-11-29 02:56:22,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:22,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279591846] [2023-11-29 02:56:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:22,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:22,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:22,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279591846] [2023-11-29 02:56:22,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279591846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:22,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:56:22,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:56:22,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092348235] [2023-11-29 02:56:22,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:22,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:56:22,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:22,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:56:22,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:56:22,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 181 [2023-11-29 02:56:22,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 219 transitions, 861 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:22,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:22,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 181 [2023-11-29 02:56:22,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:56:25,890 INFO L124 PetriNetUnfolderBase]: 15328/33228 cut-off events. [2023-11-29 02:56:25,890 INFO L125 PetriNetUnfolderBase]: For 31019/32488 co-relation queries the response was YES. [2023-11-29 02:56:25,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73407 conditions, 33228 events. 15328/33228 cut-off events. For 31019/32488 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 343254 event pairs, 4141 based on Foata normal form. 1846/29848 useless extension candidates. Maximal degree in co-relation 73363. Up to 10024 conditions per place. [2023-11-29 02:56:26,091 INFO L140 encePairwiseOnDemand]: 149/181 looper letters, 225 selfloop transitions, 20 changer transitions 0/341 dead transitions. [2023-11-29 02:56:26,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 341 transitions, 2081 flow [2023-11-29 02:56:26,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:56:26,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:56:26,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 544 transitions. [2023-11-29 02:56:26,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7513812154696132 [2023-11-29 02:56:26,094 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 544 transitions. [2023-11-29 02:56:26,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 544 transitions. [2023-11-29 02:56:26,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:56:26,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 544 transitions. [2023-11-29 02:56:26,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:26,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:26,098 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:26,099 INFO L175 Difference]: Start difference. First operand has 187 places, 219 transitions, 861 flow. Second operand 4 states and 544 transitions. [2023-11-29 02:56:26,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 341 transitions, 2081 flow [2023-11-29 02:56:26,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 341 transitions, 2057 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-29 02:56:26,255 INFO L231 Difference]: Finished difference. Result has 189 places, 227 transitions, 989 flow [2023-11-29 02:56:26,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=989, PETRI_PLACES=189, PETRI_TRANSITIONS=227} [2023-11-29 02:56:26,256 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 26 predicate places. [2023-11-29 02:56:26,257 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 227 transitions, 989 flow [2023-11-29 02:56:26,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:26,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:26,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:56:26,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:56:26,257 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:56:26,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:26,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1964880321, now seen corresponding path program 1 times [2023-11-29 02:56:26,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:26,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112957916] [2023-11-29 02:56:26,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:26,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:26,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:26,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112957916] [2023-11-29 02:56:26,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112957916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:26,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:56:26,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:56:26,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131671463] [2023-11-29 02:56:26,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:26,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:56:26,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:26,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:56:26,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:56:26,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 181 [2023-11-29 02:56:26,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 227 transitions, 989 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:26,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:26,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 181 [2023-11-29 02:56:26,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:56:29,663 INFO L124 PetriNetUnfolderBase]: 12121/28190 cut-off events. [2023-11-29 02:56:29,664 INFO L125 PetriNetUnfolderBase]: For 29980/31246 co-relation queries the response was YES. [2023-11-29 02:56:29,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66825 conditions, 28190 events. 12121/28190 cut-off events. For 29980/31246 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 296859 event pairs, 2039 based on Foata normal form. 826/25271 useless extension candidates. Maximal degree in co-relation 66778. Up to 8676 conditions per place. [2023-11-29 02:56:29,832 INFO L140 encePairwiseOnDemand]: 165/181 looper letters, 228 selfloop transitions, 33 changer transitions 0/361 dead transitions. [2023-11-29 02:56:29,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 361 transitions, 2050 flow [2023-11-29 02:56:29,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:56:29,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:56:29,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 705 transitions. [2023-11-29 02:56:29,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7790055248618785 [2023-11-29 02:56:29,835 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 705 transitions. [2023-11-29 02:56:29,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 705 transitions. [2023-11-29 02:56:29,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:56:29,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 705 transitions. [2023-11-29 02:56:29,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:29,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:29,840 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:29,840 INFO L175 Difference]: Start difference. First operand has 189 places, 227 transitions, 989 flow. Second operand 5 states and 705 transitions. [2023-11-29 02:56:29,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 361 transitions, 2050 flow [2023-11-29 02:56:30,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 361 transitions, 2050 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 02:56:30,053 INFO L231 Difference]: Finished difference. Result has 193 places, 231 transitions, 1067 flow [2023-11-29 02:56:30,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1067, PETRI_PLACES=193, PETRI_TRANSITIONS=231} [2023-11-29 02:56:30,054 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 30 predicate places. [2023-11-29 02:56:30,054 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 231 transitions, 1067 flow [2023-11-29 02:56:30,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:30,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:30,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:56:30,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:56:30,055 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:56:30,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:30,055 INFO L85 PathProgramCache]: Analyzing trace with hash -325510488, now seen corresponding path program 1 times [2023-11-29 02:56:30,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:30,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467671353] [2023-11-29 02:56:30,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:30,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:30,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:30,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467671353] [2023-11-29 02:56:30,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467671353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:30,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:56:30,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:56:30,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962644629] [2023-11-29 02:56:30,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:30,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:56:30,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:30,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:56:30,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:56:30,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 181 [2023-11-29 02:56:30,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 231 transitions, 1067 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:30,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:30,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 181 [2023-11-29 02:56:30,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:56:32,329 INFO L124 PetriNetUnfolderBase]: 9668/24758 cut-off events. [2023-11-29 02:56:32,330 INFO L125 PetriNetUnfolderBase]: For 27640/28671 co-relation queries the response was YES. [2023-11-29 02:56:32,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57680 conditions, 24758 events. 9668/24758 cut-off events. For 27640/28671 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 271181 event pairs, 5582 based on Foata normal form. 608/21785 useless extension candidates. Maximal degree in co-relation 57631. Up to 10409 conditions per place. [2023-11-29 02:56:32,530 INFO L140 encePairwiseOnDemand]: 176/181 looper letters, 161 selfloop transitions, 4 changer transitions 0/289 dead transitions. [2023-11-29 02:56:32,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 289 transitions, 1763 flow [2023-11-29 02:56:32,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:56:32,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:56:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 572 transitions. [2023-11-29 02:56:32,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7900552486187845 [2023-11-29 02:56:32,533 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 572 transitions. [2023-11-29 02:56:32,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 572 transitions. [2023-11-29 02:56:32,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:56:32,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 572 transitions. [2023-11-29 02:56:32,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:32,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:32,538 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:32,538 INFO L175 Difference]: Start difference. First operand has 193 places, 231 transitions, 1067 flow. Second operand 4 states and 572 transitions. [2023-11-29 02:56:32,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 289 transitions, 1763 flow [2023-11-29 02:56:32,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 289 transitions, 1763 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 02:56:32,706 INFO L231 Difference]: Finished difference. Result has 198 places, 232 transitions, 1090 flow [2023-11-29 02:56:32,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1090, PETRI_PLACES=198, PETRI_TRANSITIONS=232} [2023-11-29 02:56:32,707 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 35 predicate places. [2023-11-29 02:56:32,708 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 232 transitions, 1090 flow [2023-11-29 02:56:32,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:32,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:32,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:56:32,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:56:32,708 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:56:32,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:32,709 INFO L85 PathProgramCache]: Analyzing trace with hash -325478678, now seen corresponding path program 1 times [2023-11-29 02:56:32,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:32,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475997182] [2023-11-29 02:56:32,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:32,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:32,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:32,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:32,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475997182] [2023-11-29 02:56:32,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475997182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:32,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:56:32,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:56:32,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064012949] [2023-11-29 02:56:32,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:32,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:56:32,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:32,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:56:32,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:56:32,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 181 [2023-11-29 02:56:32,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 232 transitions, 1090 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:32,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:32,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 181 [2023-11-29 02:56:32,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:56:39,213 INFO L124 PetriNetUnfolderBase]: 25266/59798 cut-off events. [2023-11-29 02:56:39,213 INFO L125 PetriNetUnfolderBase]: For 75584/78378 co-relation queries the response was YES. [2023-11-29 02:56:39,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142634 conditions, 59798 events. 25266/59798 cut-off events. For 75584/78378 co-relation queries the response was YES. Maximal size of possible extension queue 1620. Compared 686507 event pairs, 3980 based on Foata normal form. 2235/54661 useless extension candidates. Maximal degree in co-relation 142583. Up to 16572 conditions per place. [2023-11-29 02:56:39,660 INFO L140 encePairwiseOnDemand]: 162/181 looper letters, 309 selfloop transitions, 32 changer transitions 0/449 dead transitions. [2023-11-29 02:56:39,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 449 transitions, 3057 flow [2023-11-29 02:56:39,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:56:39,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:56:39,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 719 transitions. [2023-11-29 02:56:39,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7944751381215469 [2023-11-29 02:56:39,663 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 719 transitions. [2023-11-29 02:56:39,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 719 transitions. [2023-11-29 02:56:39,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:56:39,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 719 transitions. [2023-11-29 02:56:39,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:39,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:39,669 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:39,669 INFO L175 Difference]: Start difference. First operand has 198 places, 232 transitions, 1090 flow. Second operand 5 states and 719 transitions. [2023-11-29 02:56:39,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 449 transitions, 3057 flow [2023-11-29 02:56:39,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 449 transitions, 3054 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:56:39,997 INFO L231 Difference]: Finished difference. Result has 205 places, 254 transitions, 1357 flow [2023-11-29 02:56:39,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1357, PETRI_PLACES=205, PETRI_TRANSITIONS=254} [2023-11-29 02:56:39,999 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 42 predicate places. [2023-11-29 02:56:39,999 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 254 transitions, 1357 flow [2023-11-29 02:56:39,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:39,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:39,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:56:39,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:56:39,999 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:56:40,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:40,000 INFO L85 PathProgramCache]: Analyzing trace with hash -781747391, now seen corresponding path program 1 times [2023-11-29 02:56:40,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:40,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163690978] [2023-11-29 02:56:40,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:40,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:40,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:40,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163690978] [2023-11-29 02:56:40,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163690978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:40,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:56:40,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:56:40,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740484644] [2023-11-29 02:56:40,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:40,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:56:40,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:40,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:56:40,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:56:40,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 181 [2023-11-29 02:56:40,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 254 transitions, 1357 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:40,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:40,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 181 [2023-11-29 02:56:40,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:56:54,144 INFO L124 PetriNetUnfolderBase]: 52118/112484 cut-off events. [2023-11-29 02:56:54,145 INFO L125 PetriNetUnfolderBase]: For 174687/180923 co-relation queries the response was YES. [2023-11-29 02:56:54,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294465 conditions, 112484 events. 52118/112484 cut-off events. For 174687/180923 co-relation queries the response was YES. Maximal size of possible extension queue 2757. Compared 1314490 event pairs, 12898 based on Foata normal form. 3655/108911 useless extension candidates. Maximal degree in co-relation 294408. Up to 29504 conditions per place. [2023-11-29 02:56:55,339 INFO L140 encePairwiseOnDemand]: 160/181 looper letters, 430 selfloop transitions, 44 changer transitions 0/586 dead transitions. [2023-11-29 02:56:55,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 586 transitions, 4316 flow [2023-11-29 02:56:55,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:56:55,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 02:56:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 990 transitions. [2023-11-29 02:56:55,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7813733228097869 [2023-11-29 02:56:55,343 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 990 transitions. [2023-11-29 02:56:55,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 990 transitions. [2023-11-29 02:56:55,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:56:55,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 990 transitions. [2023-11-29 02:56:55,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 141.42857142857142) internal successors, (990), 7 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:55,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:55,351 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:55,351 INFO L175 Difference]: Start difference. First operand has 205 places, 254 transitions, 1357 flow. Second operand 7 states and 990 transitions. [2023-11-29 02:56:55,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 586 transitions, 4316 flow [2023-11-29 02:56:56,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 586 transitions, 4268 flow, removed 24 selfloop flow, removed 0 redundant places. [2023-11-29 02:56:56,756 INFO L231 Difference]: Finished difference. Result has 215 places, 278 transitions, 1653 flow [2023-11-29 02:56:56,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1653, PETRI_PLACES=215, PETRI_TRANSITIONS=278} [2023-11-29 02:56:56,757 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 52 predicate places. [2023-11-29 02:56:56,757 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 278 transitions, 1653 flow [2023-11-29 02:56:56,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:56,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:56,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:56:56,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:56:56,758 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:56:56,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:56,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1499934686, now seen corresponding path program 1 times [2023-11-29 02:56:56,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:56,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737323837] [2023-11-29 02:56:56,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:56,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:56,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:56,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737323837] [2023-11-29 02:56:56,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737323837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:56,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:56:56,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:56:56,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929344600] [2023-11-29 02:56:56,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:56,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:56:56,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:56,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:56:56,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:56:56,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 181 [2023-11-29 02:56:56,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 278 transitions, 1653 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:56,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:56,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 181 [2023-11-29 02:56:56,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:57:07,910 INFO L124 PetriNetUnfolderBase]: 37954/90994 cut-off events. [2023-11-29 02:57:07,911 INFO L125 PetriNetUnfolderBase]: For 186431/192335 co-relation queries the response was YES. [2023-11-29 02:57:08,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243047 conditions, 90994 events. 37954/90994 cut-off events. For 186431/192335 co-relation queries the response was YES. Maximal size of possible extension queue 2415. Compared 1117870 event pairs, 6803 based on Foata normal form. 3199/84471 useless extension candidates. Maximal degree in co-relation 242984. Up to 27012 conditions per place. [2023-11-29 02:57:08,838 INFO L140 encePairwiseOnDemand]: 165/181 looper letters, 348 selfloop transitions, 33 changer transitions 0/501 dead transitions. [2023-11-29 02:57:08,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 501 transitions, 4086 flow [2023-11-29 02:57:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:57:08,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:57:08,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2023-11-29 02:57:08,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7767955801104972 [2023-11-29 02:57:08,840 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 703 transitions. [2023-11-29 02:57:08,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 703 transitions. [2023-11-29 02:57:08,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:08,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 703 transitions. [2023-11-29 02:57:08,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:08,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:08,844 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:08,844 INFO L175 Difference]: Start difference. First operand has 215 places, 278 transitions, 1653 flow. Second operand 5 states and 703 transitions. [2023-11-29 02:57:08,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 501 transitions, 4086 flow [2023-11-29 02:57:10,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 501 transitions, 4086 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 02:57:10,305 INFO L231 Difference]: Finished difference. Result has 219 places, 282 transitions, 1731 flow [2023-11-29 02:57:10,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1731, PETRI_PLACES=219, PETRI_TRANSITIONS=282} [2023-11-29 02:57:10,306 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 56 predicate places. [2023-11-29 02:57:10,306 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 282 transitions, 1731 flow [2023-11-29 02:57:10,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:10,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:57:10,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:10,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:57:10,307 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:57:10,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:10,307 INFO L85 PathProgramCache]: Analyzing trace with hash 986428407, now seen corresponding path program 1 times [2023-11-29 02:57:10,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:10,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354373412] [2023-11-29 02:57:10,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:10,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:10,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:10,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354373412] [2023-11-29 02:57:10,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354373412] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:10,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828740677] [2023-11-29 02:57:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:10,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:10,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:10,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:10,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:57:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:10,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 02:57:10,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:10,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 02:57:10,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 02:57:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:10,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:10,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-11-29 02:57:10,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-29 02:57:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:10,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828740677] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:57:10,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:57:10,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 02:57:10,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892438803] [2023-11-29 02:57:10,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:57:10,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:57:10,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:10,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:57:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:57:11,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 181 [2023-11-29 02:57:11,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 282 transitions, 1731 flow. Second operand has 12 states, 12 states have (on average 108.58333333333333) internal successors, (1303), 12 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:11,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:57:11,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 181 [2023-11-29 02:57:11,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:57:22,789 INFO L124 PetriNetUnfolderBase]: 36659/92165 cut-off events. [2023-11-29 02:57:22,789 INFO L125 PetriNetUnfolderBase]: For 198460/203080 co-relation queries the response was YES. [2023-11-29 02:57:23,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253349 conditions, 92165 events. 36659/92165 cut-off events. For 198460/203080 co-relation queries the response was YES. Maximal size of possible extension queue 2423. Compared 1175220 event pairs, 10993 based on Foata normal form. 3063/86685 useless extension candidates. Maximal degree in co-relation 253284. Up to 18969 conditions per place. [2023-11-29 02:57:23,659 INFO L140 encePairwiseOnDemand]: 156/181 looper letters, 406 selfloop transitions, 56 changer transitions 0/594 dead transitions. [2023-11-29 02:57:23,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 594 transitions, 4647 flow [2023-11-29 02:57:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:57:23,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:57:23,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1343 transitions. [2023-11-29 02:57:23,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7419889502762431 [2023-11-29 02:57:23,664 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1343 transitions. [2023-11-29 02:57:23,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1343 transitions. [2023-11-29 02:57:23,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:23,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1343 transitions. [2023-11-29 02:57:23,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.3) internal successors, (1343), 10 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:23,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:23,673 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:23,673 INFO L175 Difference]: Start difference. First operand has 219 places, 282 transitions, 1731 flow. Second operand 10 states and 1343 transitions. [2023-11-29 02:57:23,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 594 transitions, 4647 flow [2023-11-29 02:57:27,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 594 transitions, 4647 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 02:57:27,519 INFO L231 Difference]: Finished difference. Result has 232 places, 294 transitions, 2054 flow [2023-11-29 02:57:27,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2054, PETRI_PLACES=232, PETRI_TRANSITIONS=294} [2023-11-29 02:57:27,520 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 69 predicate places. [2023-11-29 02:57:27,520 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 294 transitions, 2054 flow [2023-11-29 02:57:27,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 108.58333333333333) internal successors, (1303), 12 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:27,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:57:27,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:27,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:57:27,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 02:57:27,722 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:57:27,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:27,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1535636100, now seen corresponding path program 1 times [2023-11-29 02:57:27,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:27,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164898922] [2023-11-29 02:57:27,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:27,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:27,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:27,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164898922] [2023-11-29 02:57:27,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164898922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:27,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:27,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:57:27,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857720076] [2023-11-29 02:57:27,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:27,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:57:27,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:27,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:57:27,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:57:27,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 181 [2023-11-29 02:57:27,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 294 transitions, 2054 flow. Second operand has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:27,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:57:27,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 181 [2023-11-29 02:57:27,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:57:58,619 INFO L124 PetriNetUnfolderBase]: 113207/210433 cut-off events. [2023-11-29 02:57:58,619 INFO L125 PetriNetUnfolderBase]: For 587513/601333 co-relation queries the response was YES. [2023-11-29 02:58:00,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659163 conditions, 210433 events. 113207/210433 cut-off events. For 587513/601333 co-relation queries the response was YES. Maximal size of possible extension queue 3922. Compared 2310789 event pairs, 19238 based on Foata normal form. 9855/210309 useless extension candidates. Maximal degree in co-relation 659093. Up to 51227 conditions per place. [2023-11-29 02:58:01,176 INFO L140 encePairwiseOnDemand]: 154/181 looper letters, 653 selfloop transitions, 71 changer transitions 0/822 dead transitions. [2023-11-29 02:58:01,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 822 transitions, 7035 flow [2023-11-29 02:58:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:58:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:58:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1245 transitions. [2023-11-29 02:58:01,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6878453038674033 [2023-11-29 02:58:01,181 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1245 transitions. [2023-11-29 02:58:01,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1245 transitions. [2023-11-29 02:58:01,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:58:01,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1245 transitions. [2023-11-29 02:58:01,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.5) internal successors, (1245), 10 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:58:01,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:58:01,189 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:58:01,189 INFO L175 Difference]: Start difference. First operand has 232 places, 294 transitions, 2054 flow. Second operand 10 states and 1245 transitions. [2023-11-29 02:58:01,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 822 transitions, 7035 flow [2023-11-29 02:58:14,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 822 transitions, 7017 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-29 02:58:14,903 INFO L231 Difference]: Finished difference. Result has 243 places, 336 transitions, 2722 flow [2023-11-29 02:58:14,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=2038, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2722, PETRI_PLACES=243, PETRI_TRANSITIONS=336} [2023-11-29 02:58:14,904 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 80 predicate places. [2023-11-29 02:58:14,904 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 336 transitions, 2722 flow [2023-11-29 02:58:14,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:58:14,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:58:14,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:58:14,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:58:14,904 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:58:14,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:58:14,905 INFO L85 PathProgramCache]: Analyzing trace with hash 514479200, now seen corresponding path program 1 times [2023-11-29 02:58:14,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:58:14,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175136653] [2023-11-29 02:58:14,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:58:14,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:58:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:58:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:58:15,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:58:15,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175136653] [2023-11-29 02:58:15,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175136653] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:58:15,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478815990] [2023-11-29 02:58:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:58:15,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:58:15,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:58:15,097 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:58:15,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:58:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:58:15,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 02:58:15,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:58:15,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 02:58:15,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 02:58:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:58:15,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:58:15,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-11-29 02:58:15,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-29 02:58:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:58:15,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478815990] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:58:15,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:58:15,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 02:58:15,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757151678] [2023-11-29 02:58:15,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:58:15,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:58:15,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:58:15,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:58:15,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:58:15,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 181 [2023-11-29 02:58:15,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 336 transitions, 2722 flow. Second operand has 12 states, 12 states have (on average 100.75) internal successors, (1209), 12 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:58:15,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:58:15,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 181 [2023-11-29 02:58:15,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:58:43,377 INFO L124 PetriNetUnfolderBase]: 79816/180372 cut-off events. [2023-11-29 02:58:43,377 INFO L125 PetriNetUnfolderBase]: For 618193/627973 co-relation queries the response was YES. [2023-11-29 02:58:44,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573034 conditions, 180372 events. 79816/180372 cut-off events. For 618193/627973 co-relation queries the response was YES. Maximal size of possible extension queue 4032. Compared 2298314 event pairs, 31091 based on Foata normal form. 5863/176834 useless extension candidates. Maximal degree in co-relation 572957. Up to 56095 conditions per place. [2023-11-29 02:58:45,459 INFO L140 encePairwiseOnDemand]: 156/181 looper letters, 449 selfloop transitions, 54 changer transitions 0/631 dead transitions. [2023-11-29 02:58:45,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 631 transitions, 5600 flow [2023-11-29 02:58:45,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:58:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:58:45,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1257 transitions. [2023-11-29 02:58:45,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944751381215469 [2023-11-29 02:58:45,463 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1257 transitions. [2023-11-29 02:58:45,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1257 transitions. [2023-11-29 02:58:45,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:58:45,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1257 transitions. [2023-11-29 02:58:45,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.7) internal successors, (1257), 10 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:58:45,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:58:45,468 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:58:45,469 INFO L175 Difference]: Start difference. First operand has 243 places, 336 transitions, 2722 flow. Second operand 10 states and 1257 transitions. [2023-11-29 02:58:45,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 631 transitions, 5600 flow [2023-11-29 02:59:08,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 631 transitions, 5594 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-29 02:59:08,316 INFO L231 Difference]: Finished difference. Result has 253 places, 338 transitions, 2846 flow [2023-11-29 02:59:08,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=2702, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2846, PETRI_PLACES=253, PETRI_TRANSITIONS=338} [2023-11-29 02:59:08,317 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 90 predicate places. [2023-11-29 02:59:08,317 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 338 transitions, 2846 flow [2023-11-29 02:59:08,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 100.75) internal successors, (1209), 12 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:59:08,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:59:08,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:59:08,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 02:59:08,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17a22c9-fecd-4db0-87ec-f5d99e06c675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:59:08,518 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2023-11-29 02:59:08,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:59:08,519 INFO L85 PathProgramCache]: Analyzing trace with hash 746665488, now seen corresponding path program 1 times [2023-11-29 02:59:08,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:59:08,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452447529] [2023-11-29 02:59:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:59:08,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:59:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:59:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:59:08,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:59:08,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452447529] [2023-11-29 02:59:08,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452447529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:59:08,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:59:08,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:59:08,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473744771] [2023-11-29 02:59:08,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:59:08,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:59:08,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:59:08,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:59:08,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:59:08,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 181 [2023-11-29 02:59:08,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 338 transitions, 2846 flow. Second operand has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:59:08,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:59:08,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 181 [2023-11-29 02:59:08,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand